3 ms·

Q: Why Python? A: The only alternative would be Haskell, but I still have to learn that. Wow, that would be interesting.

by kgadek 11y ago

fadsasda432 11y ago
Hi, I once tried that, but I ran into problems with lazyness. In particular my data structure was rather simple (famous gap data structure), but editing "large" files (>1000LOC) became rather unpleasant (too big input-feedback latency). However I managed to build a _very_ basic proof-of-concept editor (no dependencies) in just a few hundreds lines of code which I could explain, but until now I was too shy to share it as it did not involve magic abstract Haskell-foo ... ;)
- implicit 11y ago
  That's a shame! "Gets the job done in just a few hundred lines of easily-explained code" is a terrific standard to meet. "Magic abstract Haskell-fu" cannot improve such a program very much.
- codygman 11y ago
  > I was too shy to share it as it did not involve magic abstract Haskell-foo Please don't be, simple understandable Haskell code is very nice :) Plus if there is a better way of doing it you get to find that out too.
wz1000 11y ago
Yi[0] is an editor written in Haskell. [0]: https://github.com/yi-editor/yi https://github.com/yi-editor/yi
- euid 11y ago
  Emulates Vim quite nicely, too.
  - bsummer4 11y ago
    Not really, no. yi badly needs some more love.
    - codygman 11y ago
      Care to elaborate on where it falls down emulating vim?
      - bsummer4 11y ago
        Yi is really nice, overall. The code is clean too. I don't remember all of the issues, but there are a ton of small things that make the editor unusable to me. I used it for a couple of weeks, and I spent some time working on these issues, but never had PR-worthy code. Here's what I can remember off the top of my head: - Startup time is very slow because of the way configuration works. In my local copy, I made a version without runtime configuration, and that solved this problem. This conflicts pretty badly with the whole architecture, so I didn't make a PR. - :n :N don't work. Opening multiple files from the command line doesn't work. - :cq doesn't work. I fixed this, but my fix was a hack, so I didn't make a PR. - Operating on regions with '{' and '}' is off by one line in some directions. - You can't replace regions with shell commands. For example, using '!}sort' to sort a paragraph.
        codygman 11y ago
        Cool! I guess my evaluation of Yi/vim emulation was more cosmetic than I thought :)
- viraptor 11y ago
  It's got an amazing (I'm not sure if that's in a good or bad way) system for reloading config. Config is code. Reconfiguration means recompiling. If you reload the config, you recompile yi and reexec it - file handles and other information is left laying around so you end up in exactly the same state as before. It's slightly scary from the programming side...
  - wz1000 11y ago
    Xmonad does the same thing.

Q: Why Python? A: The only alternative would be Haskell, but I still have to learn that. Wow, that would be interesting.

by kgadek 11y ago

Q: Why Python? A: The only alternative would be Haskell, but I still have to learn that. Wow, that would be interesting.

fadsasda432 11y ago

Hi, I once tried that, but I ran into problems with lazyness. In particular my data structure was rather simple (famous gap data structure), but editing "large" files (>1000LOC) became rather unpleasant (too big input-feedback latency). However I managed to build a _very_ basic proof-of-concept editor (no dependencies) in just a few hundreds lines of code which I could explain, but until now I was too shy to share it as it did not involve magic abstract Haskell-foo ... ;)

implicit 11y ago
That's a shame! "Gets the job done in just a few hundred lines of easily-explained code" is a terrific standard to meet. "Magic abstract Haskell-fu" cannot improve such a program very much.
codygman 11y ago
> I was too shy to share it as it did not involve magic abstract Haskell-foo Please don't be, simple understandable Haskell code is very nice :) Plus if there is a better way of doing it you get to find that out too.

wz1000 11y ago

Yi[0] is an editor written in Haskell. [0]: https://github.com/yi-editor/yi https://github.com/yi-editor/yi

euid 11y ago
Emulates Vim quite nicely, too.
- bsummer4 11y ago
  Not really, no. yi badly needs some more love.
  - codygman 11y ago
    Care to elaborate on where it falls down emulating vim?
    - bsummer4 11y ago
      Yi is really nice, overall. The code is clean too. I don't remember all of the issues, but there are a ton of small things that make the editor unusable to me. I used it for a couple of weeks, and I spent some time working on these issues, but never had PR-worthy code. Here's what I can remember off the top of my head: - Startup time is very slow because of the way configuration works. In my local copy, I made a version without runtime configuration, and that solved this problem. This conflicts pretty badly with the whole architecture, so I didn't make a PR. - :n :N don't work. Opening multiple files from the command line doesn't work. - :cq doesn't work. I fixed this, but my fix was a hack, so I didn't make a PR. - Operating on regions with '{' and '}' is off by one line in some directions. - You can't replace regions with shell commands. For example, using '!}sort' to sort a paragraph.
      - codygman 11y ago
        Cool! I guess my evaluation of Yi/vim emulation was more cosmetic than I thought :)
viraptor 11y ago
It's got an amazing (I'm not sure if that's in a good or bad way) system for reloading config. Config is code. Reconfiguration means recompiling. If you reload the config, you recompile yi and reexec it - file handles and other information is left laying around so you end up in exactly the same state as before. It's slightly scary from the programming side...
- wz1000 11y ago
  Xmonad does the same thing.